ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES - Table of accrued expenses and other current liabilities (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Accrued Liabilities and Other Liabilities Disclosure Current [Abstract]
Compensation and benefits	$ 731,368	$ 635,039
Interest	759,746	265,719
Product warranty liability	384,126	263,000
Professional fees	200,047	21,388
Customer deposits	45,440	79,384
Rent	42,135	39,674
Other	277,204	211,130
Total accrued expenses and other current liabilities	$ 2,440,066	$ 1,515,334